1220022020 has 48 divisors (see below), whose sum is σ = 2932796160. Its totient is φ = 417615744.

The previous prime is 1220021989. The next prime is 1220022029. The reversal of 1220022020 is 202200221.

It is a junction number, because it is equal to n+sod(n) for n = 1220021992 and 1220022010.

It is not an unprimeable number, because it can be changed into a prime (1220022029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83846 + ... + 97314.

It is an arithmetic number, because the mean of its divisors is an integer number (61099920).

Almost surely, 2^1220022020 is an apocalyptic number.

1220022020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220022020 is an abundant number, since it is smaller than the sum of its proper divisors (1712774140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1220022020 is a wasteful number, since it uses less digits than its factorization.

1220022020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14132 (or 14130 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 1220022020 is about 34928.8136071067. The cubic root of 1220022020 is about 1068.5361588055.

Adding to 1220022020 its reverse (202200221), we get a palindrome (1422222241).

The spelling of 1220022020 in words is "one billion, two hundred twenty million, twenty-two thousand, twenty".